Flat cable winding device

Abstract

A flat cable winding device includes: a rotation ring positioning a plurality of rollers at an inner circumferential side of the rotation ring, rotating coaxially with a shaft portion formed in a case, and including a circumferential wall portion on which a flat cable wound from outside of the case is wound. The circumferential wall portion includes a notched portion through which the flat cable is routed between an outer circumference side and an inner circumference side of the circumferential wall portion and held. At least one of the plurality of rollers is an inverting roller winding the flat cable wound on the shaft portion and inverting the flat cable toward the notched portion as a rotation table rotates with the shaft portion as a central axis.

What is claimed is: 
     
         1 . A flat cable winding device comprising:
 a flat cable;   a case in which a first end of the flat cable is wound and accommodated;   a shaft portion provided in the case and on which a second end of the flat cable is wound;   a rotation table rotating with the shaft portion as a central axis;   an energizing member energizing the rotation table in a winding direction of the flat cable;   a plurality of rollers arranged in a rotation direction of the rotation table and rotatably supported on the rotation table; and   a rotation ring positioning the plurality of rollers at an inner circumferential side of the rotation ring, rotating coaxially with the shaft portion, and including a circumferential wall portion on which the flat cable wound from the outside of the case is wound,   wherein the circumferential wall portion includes a notched portion through which the flat cable is routed between an outer circumference side and an inner circumference side of the circumferential wall portion and held, and   at least one of the plurality of rollers is an inverting roller winding the flat cable wound on the shaft portion and inverting the flat cable toward the notched portion as the rotation table rotates.   
     
     
         2 . The flat cable winding device according to  claim 1 , wherein the flat cable is formed by overlapping a plurality of single flat cables with each other,
 the circumferential wall portion includes a plurality of the notched portions in a one-to-one manner,   each single flat cable of the plurality of single flat cables is routed through each notched portion of the plurality of the notched portions, and   the inverting roller is equipped plural and the number of inverting rollers corresponds to the number of single flat cables included in the plurality of single flat cables.   
     
     
         3 . The flat cable winding device according to  claim 2 , wherein the plurality of the notched portions are formed at equal intervals in a circumferential direction of the circumferential wall portion.